Method of making truck lever connections



April 26, 1927.

s. HANSSON METHOD OF MAKING TRUCK LEVER CONNECTIONS ill Patented Apr. 23", i927.

tasse .tlihtlt'lED STATES PATENT IGFFICE;

SOREN BANSSON, OF BUTLER, PENNSYLVANIA,ASSIGNOR10$?Oli'E-Il-IALF 'IO HARRY 'lElVJIPLE ANDERSGN, OF" BUTLER-1 PENNSYLVANIA.

MIETHOD. OF MAKIHG: TRJJCKJLEVER. GGNNECTZONS.

. Application filed. November 21,1924, Serial No; 751,314. Renewed March 2,1927.

This invention relates to inuproved truck lover connection, connecting bar, or the like, and to the method of making the same, these, bars being particularly suitable tor use inthe operating mechanism. of railbars, whereby a series of the bars may be quickly. and economically produced from asingle. rolled bar of metal of uniform cross section from end to end.

According to the present invention, a con siderahlelength of angle bar is rolled so as to have a uniform cross-section resembling a lounpointed starfflhe bar will comprise tour similar flanges, radiatin from a coin- '.111011 cent/er preferably at right angles to one another. In other words. the four flanges are formed symmetrically about two planes crossing one another at right angles along the center line of the: bar. Sections of this. bar. somewhat longer thanvthe desired lengtlrot the connecting: bar to be formed. are cut from the rolled .inetal beam and integral clevises are formed atone or both ends of each bar section. by an upsetting and :t'orgiug process hereinafter described in detail.

The objects and advantages of the invention will be more apparent from the following detailed (lGSCTlP JlOD of one approved form. of the connecting bar, and the pielcrred method .byzwhich said bar is produced.

In the accompanying drawings:

Fig. l is a perspective View of a section oi the rolled metal stock from which the bars are made.

Fig. 2 is a transverse cross section through portions of the upsetting dies, in which the thickened end portions of the bar are formed. showing an end of the bar therein.

F 3 is a perspective view ot one end of the bar after this end has been upset as indicated in Fig. 2.

Fig. l is a cross section through the stan'iping dies for {forming the clevis; The cross-section of this end portion of the bar before the stamoing operation (as in Figs. 2 and 3), is indicated in Fig. t indotted lines.

Fig. is a perspective View of this end portion of the bar after the last stamping operation.

Fig.6 is a side elevation of one of theend clevises oi the completed bar.

Fig. '2'. is a plan View, on a smaller scale,- ot the con'ipleted connecting bar.

Fig. 8 is an end View of the completed bar.

i'i. uniform metal sectiom'of considerable length, is first rolled in the form indicated in Fig. 1[ This bar comprises four substantially equal flanges, 1, 2, 3 and 4-, all radiating at right angles with. one another, from a common center a. The flanges 1 and 3 are formed symmetrically, and inopposite directions from the center m, about one plane, and flanges 2 and l: are similarly formed about a. second planewhich crosses the first mentioned plane at right. angles along the center line so. It will be noted that this bar resembles a tour-pointed star in cross-section and for this reason will be hereinafter referred to as a star section.

This metal section is cut. up into lengths somewhat longer than the connecting bars which are to be formed therefrom. An end portion of this bar is then upset between a pair of dies 5 and 6, as indicated in Fig. 2. These dies are formed to fit snugly between two pair of the. flanges, such as 1 and 4t, and and 3, but are cutaway between the flanges 1 and 2, and and. at, whereby the upset metal will fill these openings, so that this end portionot the bar will now comprise two triangular portions 7 and 8, oined at their apexes' along the center line of the bar, as indicated in Fig.

This upset end portion 01 the bar is now subjected to a forging operation directed along the plane which bisects the angles formed between the two triangles 7 and 8, these angles corresponding to those between flanges 1. and t, and 2 and 3, of the original bar. This operation is indicated in Fig. 4, the stamping dies being indicated at 9 and 10. By this operation, the metal will be sipieesed from the term indicated in dotted lines, Fig. 4;. to that shown in full lines in this figure. The cavities in the dies 9 and 10 are of such configuration that the end portion of the bar will now take the form indicated in Fig. 5. This end portion will comprise a pair of similar parallel side 1ne1nhers 11 and 12, each having an outer longitudinal rib 13, and a series, here shown as three, of thickened portions 14, through which the bolt holes oi? the clevis are afterwards drilled. The flashings 15, 16 and 17, are now cut away, and the holes 18 drilled through the pairs of opposite thickened portions i l. and the clevis then completed. Usually, such a clevis is termed at each end o t the bar, as indicated in Fig. 7.

It will he noted that this connection bar, despite its peculiar configuration, is quite simply manufactured, there being but two stamping operations, and the necessary dies are simple and rugged. The .iinished connecting bar will have great strength and rigidity in proportion to its weight, which considerably less than that 01 round bars of corresponding strength.

It will be noted that the side members 11 and 12 ot the clevis outline a rectangle, and that the flanges 2 and t oi the body portion of the bar lie substantially along one diagonal of this rectangle, and the flanges l and I) along the other diagonal. These diagonally arranged flanges 1, l and -l, of the body portion, otter great resistance to bending stresses, and form a wide, strong, anchoring base for the ends oi the side mem bers 1.1 and 12 of the clevis.

In the following claims, when the expres sion star section is used, it is to be construed as referring particularly to a bar of uni l'orm cross-section of tour-pointed star shape, as indicated in the drawing, and as hereinabove described.

While it is preferable to use a bar of the type described in detail hereinabove, it is not absolutely essential that the angles between the side flanges ot' the bar all be rightangles. That is, the opposing angles between flanges 2, and 1, il could be either greater or less than the angles between llanges l, and el, thus, the connecting bar could be formed of greater width than height or vice versa, as might be desired. The dies need only be proportioned to receive stocks of either term, and the operations will otherwise be as described, hereinabove.

I claim:

1. The method of forming connecting bars which consists in subjecting the end of a metal bar or star cross-section, comprising tour substantially equal flanges radiating at right angles with one another from a coin- Inon center, to an upsetting operation whereby two opposite angles between the lianges are substantially filled with metal, and then subjecting this portion of the bar to a stamping operation directed in the plane 01" the hisector of the two open angles to form a pair of parallel side members ot a clcvis.

2. The method of forming connect ing bars which consists in subjecting the end of a metal bar of star cross-section, connin'ising :tour flanges radiating from a common center, to an upsetting operation whereb two opposite angles between the flanges are substantially tilled with metal, and then subjecting this portion of the bar to a siai'nping operation directed in the plane ot the bisector of the two open angles to form a pair of parallel side members oil a cleris.

3. The metlmd o't' 'lornling connecting bars, which consists .in rolling a uniform inelal bar 01 star cross-section, comprising tour substantially equal l'langes radiating at right-angles with one another from a connnon center, upsetting one end o l' the bar to substantially till with metal two oppositely radiating angles between the flanges, and then subjecting this portion oi the bar in a stamping operation directed in the plane ol the bisector oi, the two open angles to Form a pair oi parallel side members ol' u clcvis.

at. The method of Forming connecting bars, which consists in rolling a uniform metal bar of star cross-section, comprising iour substantially equal flanges radiating at right-angles with one another from a common center, upsetting one end of the bar to substantially iill with metal two oppositely radiating angles between the flanges, and then subjecting this portion of the bar to a stamping operation dil'ecEed in the plane of the bisect-or of the two open angles to form a pair of parallel side members ol a clevis, after which the flashing-a are cut away from the sides of and between the i-leris members, and bolt-holes are drilled through the opposite side members oi the elevis.

SOREN I'IANSSON.

IUU 

